For more information about Microsoft Exchange Server 2010 RU1, visitthe Microsoft Help and Support site and search for "KB976573"or "Description of Update Rollup 1 for Exchange Server 2010".

If Exchange 2010 is running at SP1, it is recommend to apply Update Rollup 3. To learn more about Microsoft Exchange Server 2010 RU3,visit theMicrosoft Help and Support siteand search for "KB2529939" or "Description of Update Rollup 3 for Exchange Server 2010 Service Pack 1".

The Microsoft MAPI/CDO Package installed on the BlackBerry Enterprise Server should be the latest available from Microsoft.

To verify the Microsoft Exchange Server MAPI Client and CDO 1.2.1 versions, complete the following steps:

Verify that the following .DLL files exist in ExchangeMAPI folder located in the Program Files folder and System32 folder:

If the MAPI/CDO is not at minimum version 6.5.8211.0, download the required version for preparation to update the files in Task 10 below. To locate and download the file, visit Microsoft Help and Support siteand search for "Download MAPI CDO 1.2.1". For more information on how to upgrade MAPI on the BlackBerry Enterprise Server, see KB15779.

Note: To locate these updates please visit the Microsoft Help and Support siteand search for the listed KB article numbers. These hotfixes are also included in Microsoft Windows 2008 R2 SP1.

KB979149 - A computer that is running Windows 7 or Windows Server 2008 R2 becomes unresponsive when running a large application

KB2155311 - Poor performance occurs on a computer that has NUMA-based processors and that is running Windows Server 2008 R2 or Windows 7 if a thread requests lots of memory that is within the first 4 GB of memory.

Update the MAPI subsystem to support Microsoft Exchange Server 2010 on the BlackBerry Enterprise Server.

Verify the version of MAPI Client and Collaboration Data Object (CDO) 1.2.1 as indicated in Task 1, and update as required.Visit the Microsoft Help and Support siteand search for download of MAPI CDO 1.2.1.

See KB03296 for instructions regarding moving the service account mailbox (the default name for this account is usually BESAdmin). For more information about Microsoft Mailbox Moves from Microsoft Exchange Server 2007 to 2010, pleasevisit the Microsoft TechNet siteand search for "Move Mailboxes from Exchange 2007 Servers to Exchange 2010 Servers" or "dd638192".

For more information about Microsoft Mailbox Moves from Microsoft Exchange Server 2003 to 2010,please visit the Microsoft TechNet siteand search for "Move Mailboxes from Exchange 2003 Servers to Exchange 2010 Servers" or "dd638187".

After the mailbox move, verify the move request is complete, pleasevisit the Microsoft TechNet siteand search for "View Move Request Properties" or "dd876924".

Create a new client throttling policy that does not limit concurrent connections.

By default, Microsoft Exchange Server 2010 uses client throttling policies to track the bandwidth that each BlackBerry smartphone user consumes, and enforces bandwidth limits, as necessary. The default connection is set to 20. Turn off client throttling for the Windows account that has a Microsoft Exchange Server 2010 mailbox because the policies affect the performance of the BlackBerry Enterprise Server negatively. The default name for this account is usually BESAdmin.

If the Microsoft Exchange Server is 2010 SP1, it is also necessary to execute the following command:Set-ThrottlingPolicy BESPolicy -CPAMaxConcurrency $NULL -CPAPercentTimeInCAS $NULL -CPAPercentTimeInMailboxRPC $NULL

To assign the new Throttling Policy to the BESAdmin account, type:Set-Mailbox "BESAdmin" -ThrottlingPolicy BESPolicy

To confirm that all required settings have been set correctly, follow these steps:

Note: These are Active Directory objects, and therefore they need to be replicated to all Domain Controllers within the environment. When the BlackBerry Enterprise Server connects to the Client Access Servers, the Client Access Server will apply the Throttling Policy to the assigned account based on the information in the connected Domain Controller's Active Directory database.

Successful application of this permission can be verified via Active Directory Users and Computers or via the Exchange Management Shell interface. To verify that this permission has been applied using PowerShell, run the following command (where <Display_Name> is the display name of the BlackBerry smartphone user to be verified):Get-Mailbox -Identity "<Display_Name>" | Get-ADPermission | where { ($_.ExtendedRights -like "*Send-As*") -and -not ($_.User -like "NT AUTHORITY\SELF") } | select Identity, User, ExtendedRights, IsInherited | FT -Wrap

Increase the maximum number of connections to the Address Book service for base Microsoft Exchange 2010.

By default, Microsoft Exchange Server 2010 limits the maximum number of connections from the BlackBerry Enterprise Server to the Address Book service to 50. To permit the BlackBerry Enterprise Server to run, increase the number of permitted connections to a large value (for example, 100,000).

On the computer that hosts the Microsoft Exchange Client Access Server:

Navigate to <drive>:\Program Files\Microsoft\Exchange Server\V14\Bin

Open the microsoft.exchange.addressbook.service.exe.config file in a text editor (such as Notepad).

Change the value of the MaxSessionsPerUser key to 100000.

Save and close the file.

Restart the Address Book service.

Increase the maximum number of connections to the Address Book service for Microsoft Exchange 2010 SP1.

In Microsoft Exchange 2010 SP1 the settings are maintained in the Client Throttling Policy. There are 3 CPA entries and they should be set to NULL. If they are not set to NULL run the following CMDLET to set the parameter:

(Optional) Permit meeting requests from outside of the organization when using Microsoft Exchange Web Services.

To permit BlackBerry smartphone users to receive meeting requests from outside of the organization when using Microsoft Exchange Web Services, configure the calendar settings for the BlackBerry smartphone users' mailboxes in Microsoft Exchange Server at a specific mailbox server or for a specific BlackBerry smartphone user by performing the following steps:

On a computer that hosts the Microsoft Exchange Management Shell, open the Microsoft Exchange Management Shell.

When Microsoft Exchange Server 2010 is introduced into a mixed Microsoft Exchange Server 2003 and/or Microsoft Exchange Server 2007 environment, there are specific steps that must be performed, as the Microsoft Exchange 2010 Client Access Server (CAS) component takes over all client calls in the environment for all servers.